androidManifestManifest.permissionManifest.permission_groupandroid.accessibilityserviceAccessibilityServiceandroid.accountsAccountandroid.appNotificationManagerandroid.bluetoothBluetoothAdapterBluetoothClassBluetoothClass.DeviceBluetoothClass.Device.MajorBluetoothClass.ServiceBluetoothDeviceBluetoothServerSocketBluetoothSocketandroid.contentSharedPreferencesandroid.database.sqliteSQLiteCursorDriverSQLiteOpenHelperandroid.graphicsBitmapandroid.locationLocationListenerGeocoderGpsStatusGpsStatus.ListenerGpsStatus.NmeaListenerGpsSatelliteandroid.mediaAudioFormatAsyncPlayerAudioRecordAudioRecord.OnRecordPositionUpdateListenerThumbnailUtilsAudioManagerandroid.netTrafficStatsMailToLocalSocketandroid.osAsyncTaskAsyncTask.StatusCountDownTimerMessageMessageQueueHandlerThreadandroid.textHtmlandroid.utilJsonWriterandroid.viewContextMenuContextMenu.ContextMenuInfoDisplayViewManagerViewViewStubViewTreeObserverViewParentWindowManagerGestureDetectorGravityMenuInflaterScaleGestureDetectorSoundEffectConstantsandroid.view.inputmethodInputConnectionInputMethodInputMethodSessionBaseInputConnectionInputMethodManagerandroid.widgetAbsListViewAbsListView.LayoutParamsAbsListView.OnScrollListenerAbsListView.RecyclerListenerAbsoluteLayoutAbsoluteLayout.LayoutParamsAbsSeekBarAbsSpinnerAdapterViewAdapterView.AdapterContextMenuInfoAdapterView.OnItemLongClickListenerAdapterView.OnItemSelectedListenerAdapterView.OnItemClickListenerAnalogClockBaseAdapterBaseExpandableListAdapterButtonCheckBoxCheckedTextViewCheckableChronometerChronometer.OnChronometerTickListenerCompoundButtonCompoundButton.OnCheckedChangeListenerCursorAdapterCursorTreeAdapterDatePickerDatePicker.OnDateChangedListenerDialerFilterDigitalClockEditTextFilterFilter.FilterListenerFilter.FilterResultsExpandableListAdapterExpandableListView.OnChildClickListenerExpandableListView.OnGroupClickListenerExpandableListView.OnGroupCollapseListenerExpandableListView.OnGroupExpandListenerFilterableGalleryGallery.LayoutParamsGridViewGridLayoutGridLayout.AlignmentRadioGroupImageViewImageView.ScaleTypeHorizontalScrollViewImageButtonImageSwitcherFilterQueryProviderListAdapterListViewMediaControllerMultiAutoCompleteTextViewMultiAutoCompleteTextView.CommaTokenizerMultiAutoCompleteTextView.TokenizerQuickContactBadgeRadioButtonRatingBarRatingBar.OnRatingBarChangeListenerRelativeLayoutRemoteViewsResourceCursorAdapterResourceCursorTreeAdapterScrollerScrollViewSearchViewSearchView.OnCloseListenerSearchView.OnQueryTextListenerSearchView.OnSuggestionListenerSeekBarSeekBar.OnSeekBarChangeListenerSimpleAdapterSimpleAdapter.ViewBinderSimpleCursorAdapterSimpleCursorAdapter.CursorToStringConverterSimpleCursorAdapter.ViewBinderSimpleCursorTreeAdapterSimpleCursorTreeAdapter.ViewBinderSimpleExpandableListAdapterSlidingDrawerSlidingDrawer.OnDrawerCloseListenerSlidingDrawer.OnDrawerOpenListenerSlidingDrawer.OnDrawerScrollListenerSpinnerSpinnerAdapterWrapperListAdapterTabHostTabHost.TabSpecTextViewTimePickerTimePicker.OnTimeChangedListenerToastTableLayoutTableLayout.LayoutParamsTableRowTableRow.LayoutParamsTabWidgetTextSwitcherToggleButtonTwoLineListItemVideoViewViewAnimatorViewFlipperViewSwitcherViewSwitcher.ViewFactoryZoomButtonsControllerZoomButtonsController.OnZoomListenerZoomButtonZoomControlsdalvik.systemDexFile
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文字
RadioButton
农民伯伯
版本：Android 2.2 r1
public class RadioButton extends CompoundButton
java.lang.Object
android.view.View
android.widget.TextView
android.widget.Button
android.widget.CompoundButton
android.widget.RadioButton
概述
单选按钮是一种双状态的按钮，可以选择或不选中。在单选按钮没有被选中时，用户能够按下或点击来选中它。但是，与复选框相反，用户一旦选中就不能够取消选中（译者注：可以通过代码来控制，界面上点击的效果是一旦选中之后就不能取消选中了）。
多个单选按钮通常与RadioGroup同时使用。当一个单选组（RadioGroup）包含几个单选按钮时，选中其中一个的同时将取消其它选中的单选按钮。（译者注：示例参见这里）
公共方法
public void toggle ()
将单选按钮更改为与当前选中状态相反的状态。
如果这个单选按钮已经选中，这个方法将不切换单选按钮。（译者注：请看源码：
）